/* ============================================================
   RESET + BASE
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  padding-top: var(--nav-h);
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

/* Skip-to-content link — visually hidden until focused */
.skip-link {
  position: absolute;
  top: -100%;
  left: 0;
  z-index: 1000;
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: #fff;
  font-size: 0.9rem;
  font-weight: 600;
  transition: top 0.15s;
}
.skip-link:focus {
  top: 0;
  outline: none;
}

/* ============================================================
   LAYOUT UTILITIES
   ============================================================ */
.container {
  width: min(90%, var(--max-w));
  margin: 0 auto;
  padding: 0 24px;
}
.section {
  padding: 5rem 0;
}

/* ============================================================
   FOOTER
   ============================================================ */
footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.footer-text {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}
.footer-text p {
  font-size: 0.82rem;
  color: var(--muted);
  margin: 0;
}
.footer-domain {
  font-size: 0.75rem !important;
  color: var(--muted);
}
.footer-domain a {
  color: var(--accent);
  text-decoration: none;
}
.footer-domain a:hover {
  text-decoration: underline;
}
.footer-links {
  display: flex;
  gap: 1.5rem;
}
.footer-link {
  font-size: 0.82rem;
  color: var(--muted);
  transition: color 0.15s;
}
.footer-link:hover { color: var(--text); }

/* ============================================================
   BACK TO TOP
   ============================================================ */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 99;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 1.2rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease, transform 0.25s ease, box-shadow 0.15s ease;
  box-shadow: var(--shadow-sm);
}
.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}
.back-to-top:hover {
  color: var(--text);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

/* ============================================================
   PRIVACY BANNER
   ============================================================ */
.privacy-banner {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 200;
  padding: 0.75rem 1.5rem;
  background: var(--surface);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.8rem;
  color: var(--muted);
  box-shadow: 0 -2px 8px rgba(0,0,0,0.06);
  transform: translateY(100%);
  transition: transform 0.35s ease;
  flex-wrap: wrap;
}
.privacy-banner.visible {
  transform: translateY(0);
}
.privacy-banner p {
  max-width: min(600px, 90%);
  line-height: 1.5;
}
.privacy-banner a {
  color: var(--accent);
  text-decoration: underline;
}
.privacy-btn {
  flex-shrink: 0;
  padding: 0.35rem 1rem;
  border-radius: var(--radius);
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #fff;
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
}
.privacy-btn:hover {
  background: var(--accent-hover);
}

/* ============================================================
   PRINT STYLESHEET
   ============================================================ */
@media print {
  .nav,
  .back-to-top,
  .bg-3d,
  .bg-3d-full,
  #cloud-globe,
  .visitor-info,
  .node-info,
  .nn-tooltip,
  .cursor-dot,
  .cursor-ring,
  .privacy-banner,
  .theme-btn,
  .carousel-btn,
  .carousel-dots,
  .filter-bar,
  canvas,
  .footer-links {
    display: none !important;
  }
  body {
    padding-top: 0;
    background: #fff !important;
    color: #000 !important;
  }
  .hero { min-height: auto; padding: 2rem 0; }
  .page-header.has-bg { min-height: auto; background: none !important; }
  .section { padding: 1rem 0; }
  .card { break-inside: avoid; page-break-inside: avoid; }
  a[href]::after { content: " (" attr(href) ")"; font-size: 0.8em; color: #666; }
  a[href^="#"]::after,
  a[href^="javascript"]::after { content: ""; }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; gap: 3rem; }
  .page-header-flex { flex-direction: column; gap: 2rem; }
  .page-header-text { max-width: 100%; }
}

@media (max-width: 640px) {
  .contact-cards { grid-template-columns: 1fr; }

  .nav-links {
    position: fixed;
    top: var(--nav-h);
    left: 0; right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 1.5rem 24px 2rem;
    gap: 1.25rem;
    align-items: flex-start;
    box-shadow: var(--shadow);
    pointer-events: none;
    opacity: 0;
    transform: translateY(-8px);
    transition: opacity 0.25s ease, transform 0.3s ease;
  }
  .nav-links.open {
    pointer-events: auto;
    opacity: 1;
    transform: translateY(0);
  }
  nav { display: flex; align-items: center; }
  .nav-toggle { display: flex; }

  /* dropdown inline on mobile */
  .nav-dropdown {
    width: 100%;
  }
  .dropdown-menu {
    position: static;
    transform: none;
    box-shadow: none;
    border: none;
    padding: 0 0 0 1rem;
    background: transparent;
    min-width: auto;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    visibility: visible;
    transition: max-height 0.3s ease, opacity 0.25s ease, padding 0.3s ease;
  }
  .nav-dropdown.open .dropdown-menu {
    max-height: 70vh;
    opacity: 1;
    padding: 0 0 0.5rem 1rem;
  }

  .hero-name { font-size: clamp(3.25rem, 14vw, 5rem); overflow-wrap: break-word; }
  .section { padding: 3.5rem 0; }
  .page-header { padding: 2.5rem 0 2rem; }

  /* Mobile: full-width container for role page headers */
  [data-page="cyber"] .page-header.has-bg .container,
  [data-page="ml"] .page-header.has-bg .container {
    width: 100%;
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 24px;
  }

  /* Mobile: reduce excessive header height on pages with 3D bg */
  .page-header.has-bg { min-height: auto; }
  [data-page="cyber"] .page-header.has-bg { min-height: auto; }

  /* Mobile: reposition visitor info to static so it doesn't overlap content */
  .visitor-info {
    position: relative;
    top: auto;
    right: auto;
    margin-bottom: 1rem;
  }

  /* Mobile: reduce contact wrapper top/bottom padding */
  .contact-wrapper { padding: 2.5rem 0; }

  /* Mobile: horizontal-scroll filter bar */
  .filter-bar {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    -webkit-mask-image: linear-gradient(to right, black 92%, transparent 100%);
    mask-image: linear-gradient(to right, black 92%, transparent 100%);
  }
  .filter-bar::-webkit-scrollbar { display: none; }
  .filter-btn { flex-shrink: 0; }

  /* Mobile: tighter badge gaps */
  #badgeList { gap: 0.5rem; }

  /* Mobile: tighter privacy banner */
  .privacy-banner {
    padding: 0.5rem 1rem;
    font-size: 0.72rem;
    gap: 0.5rem;
  }
  .privacy-banner p { max-width: 100%; }
  .privacy-btn { padding: 0.25rem 0.75rem; font-size: 0.72rem; }
}

@media (max-width: 480px) {
  .container,
  .nav-inner { padding: 0 16px; }
}